[linux-2.6-block.git] / drivers / pnp / interface.c

/*
 * interface.c - contains everything related to the user interface
 *
 * Some code, especially possible resource dumping is based on isapnp_proc.c (c) Jaroslav Kysela <perex@perex.cz>
 * Copyright 2002 Adam Belay <ambx1@neo.rr.com>
 * Copyright (C) 2008 Hewlett-Packard Development Company, L.P.
 *	Bjorn Helgaas <bjorn.helgaas@hp.com>
 */

#include <linux/pnp.h>
#include <linux/string.h>
#include <linux/errno.h>
#include <linux/list.h>
#include <linux/types.h>
#include <linux/stat.h>
#include <linux/ctype.h>
#include <linux/slab.h>
#include <linux/mutex.h>

#include <asm/uaccess.h>

#include "base.h"

struct pnp_info_buffer {
	char *buffer;		/* pointer to begin of buffer */
	char *curr;		/* current position in buffer */
	unsigned long size;	/* current size */
	unsigned long len;	/* total length of buffer */
	int stop;		/* stop flag */
	int error;		/* error code */
};

typedef struct pnp_info_buffer pnp_info_buffer_t;

static int pnp_printf(pnp_info_buffer_t * buffer, char *fmt, ...)
{
	va_list args;
	int res;

	if (buffer->stop || buffer->error)
		return 0;
	va_start(args, fmt);
	res = vsnprintf(buffer->curr, buffer->len - buffer->size, fmt, args);
	va_end(args);
	if (buffer->size + res >= buffer->len) {
		buffer->stop = 1;
		return 0;
	}
	buffer->curr += res;
	buffer->size += res;
	return res;
}

static void pnp_print_port(pnp_info_buffer_t * buffer, char *space,
			   struct pnp_port *port)
{
	pnp_printf(buffer, "%sport %#llx-%#llx, align %#llx, size %#llx, "
		   "%i-bit address decoding\n", space,
		   (unsigned long long) port->min,
		   (unsigned long long) port->max,
		   port->align ? ((unsigned long long) port->align - 1) : 0,
		   (unsigned long long) port->size,
		   port->flags & IORESOURCE_IO_16BIT_ADDR ? 16 : 10);
}

static void pnp_print_irq(pnp_info_buffer_t * buffer, char *space,
			  struct pnp_irq *irq)
{
	int first = 1, i;

	pnp_printf(buffer, "%sirq ", space);
	for (i = 0; i < PNP_IRQ_NR; i++)
		if (test_bit(i, irq->map.bits)) {
			if (!first) {
				pnp_printf(buffer, ",");
			} else {
				first = 0;
			}
			if (i == 2 || i == 9)
				pnp_printf(buffer, "2/9");
			else
				pnp_printf(buffer, "%i", i);
		}
	if (bitmap_empty(irq->map.bits, PNP_IRQ_NR))
		pnp_printf(buffer, "<none>");
	if (irq->flags & IORESOURCE_IRQ_HIGHEDGE)
		pnp_printf(buffer, " High-Edge");
	if (irq->flags & IORESOURCE_IRQ_LOWEDGE)
		pnp_printf(buffer, " Low-Edge");
	if (irq->flags & IORESOURCE_IRQ_HIGHLEVEL)
		pnp_printf(buffer, " High-Level");
	if (irq->flags & IORESOURCE_IRQ_LOWLEVEL)
		pnp_printf(buffer, " Low-Level");
	if (irq->flags & IORESOURCE_IRQ_OPTIONAL)
		pnp_printf(buffer, " (optional)");
	pnp_printf(buffer, "\n");
}

static void pnp_print_dma(pnp_info_buffer_t * buffer, char *space,
			  struct pnp_dma *dma)
{
	int first = 1, i;
	char *s;

	pnp_printf(buffer, "%sdma ", space);
	for (i = 0; i < 8; i++)
		if (dma->map & (1 << i)) {
			if (!first) {
				pnp_printf(buffer, ",");
			} else {
				first = 0;
			}
			pnp_printf(buffer, "%i", i);
		}
	if (!dma->map)
		pnp_printf(buffer, "<none>");
	switch (dma->flags & IORESOURCE_DMA_TYPE_MASK) {
	case IORESOURCE_DMA_8BIT:
		s = "8-bit";
		break;
	case IORESOURCE_DMA_8AND16BIT:
		s = "8-bit&16-bit";
		break;
	default:
		s = "16-bit";
	}
	pnp_printf(buffer, " %s", s);
	if (dma->flags & IORESOURCE_DMA_MASTER)
		pnp_printf(buffer, " master");
	if (dma->flags & IORESOURCE_DMA_BYTE)
		pnp_printf(buffer, " byte-count");
	if (dma->flags & IORESOURCE_DMA_WORD)
		pnp_printf(buffer, " word-count");
	switch (dma->flags & IORESOURCE_DMA_SPEED_MASK) {
	case IORESOURCE_DMA_TYPEA:
		s = "type-A";
		break;
	case IORESOURCE_DMA_TYPEB:
		s = "type-B";
		break;
	case IORESOURCE_DMA_TYPEF:
		s = "type-F";
		break;
	default:
		s = "compatible";
		break;
	}
	pnp_printf(buffer, " %s\n", s);
}

static void pnp_print_mem(pnp_info_buffer_t * buffer, char *space,
			  struct pnp_mem *mem)
{
	char *s;

	pnp_printf(buffer, "%sMemory %#llx-%#llx, align %#llx, size %#llx",
		   space, (unsigned long long) mem->min,
		   (unsigned long long) mem->max,
		   (unsigned long long) mem->align,
		   (unsigned long long) mem->size);
	if (mem->flags & IORESOURCE_MEM_WRITEABLE)
		pnp_printf(buffer, ", writeable");
	if (mem->flags & IORESOURCE_MEM_CACHEABLE)
		pnp_printf(buffer, ", cacheable");
	if (mem->flags & IORESOURCE_MEM_RANGELENGTH)
		pnp_printf(buffer, ", range-length");
	if (mem->flags & IORESOURCE_MEM_SHADOWABLE)
		pnp_printf(buffer, ", shadowable");
	if (mem->flags & IORESOURCE_MEM_EXPANSIONROM)
		pnp_printf(buffer, ", expansion ROM");
	switch (mem->flags & IORESOURCE_MEM_TYPE_MASK) {
	case IORESOURCE_MEM_8BIT:
		s = "8-bit";
		break;
	case IORESOURCE_MEM_8AND16BIT:
		s = "8-bit&16-bit";
		break;
	case IORESOURCE_MEM_32BIT:
		s = "32-bit";
		break;
	default:
		s = "16-bit";
	}
	pnp_printf(buffer, ", %s\n", s);
}

static void pnp_print_option(pnp_info_buffer_t * buffer, char *space,
			     struct pnp_option *option)
{
	switch (option->type) {
	case IORESOURCE_IO:
		pnp_print_port(buffer, space, &option->u.port);
		break;
	case IORESOURCE_MEM:
		pnp_print_mem(buffer, space, &option->u.mem);
		break;
	case IORESOURCE_IRQ:
		pnp_print_irq(buffer, space, &option->u.irq);
		break;
	case IORESOURCE_DMA:
		pnp_print_dma(buffer, space, &option->u.dma);
		break;
	}
}

static ssize_t pnp_show_options(struct device *dmdev,
				struct device_attribute *attr, char *buf)
{
	struct pnp_dev *dev = to_pnp_dev(dmdev);
	pnp_info_buffer_t *buffer;
	struct pnp_option *option;
	int ret, dep = 0, set = 0;
	char *indent;

	buffer = pnp_alloc(sizeof(pnp_info_buffer_t));
	if (!buffer)
		return -ENOMEM;

	buffer->len = PAGE_SIZE;
	buffer->buffer = buf;
	buffer->curr = buffer->buffer;

	list_for_each_entry(option, &dev->options, list) {
		if (pnp_option_is_dependent(option)) {
			indent = "  ";
			if (!dep || pnp_option_set(option) != set) {
				set = pnp_option_set(option);
				dep = 1;
				pnp_printf(buffer, "Dependent: %02i - "
					   "Priority %s\n", set,
					   pnp_option_priority_name(option));
			}
		} else {
			dep = 0;
			indent = "";
		}
		pnp_print_option(buffer, indent, option);
	}

	ret = (buffer->curr - buf);
	kfree(buffer);
	return ret;
}

static ssize_t pnp_show_current_resources(struct device *dmdev,
					  struct device_attribute *attr,
					  char *buf)
{
	struct pnp_dev *dev = to_pnp_dev(dmdev);
	pnp_info_buffer_t *buffer;
	struct pnp_resource *pnp_res;
	struct resource *res;
	int ret;

	if (!dev)
		return -EINVAL;

	buffer = pnp_alloc(sizeof(pnp_info_buffer_t));
	if (!buffer)
		return -ENOMEM;

	buffer->len = PAGE_SIZE;
	buffer->buffer = buf;
	buffer->curr = buffer->buffer;

	pnp_printf(buffer, "state = %s\n", dev->active ? "active" : "disabled");

	list_for_each_entry(pnp_res, &dev->resources, list) {
		res = &pnp_res->res;

		pnp_printf(buffer, pnp_resource_type_name(res));

		if (res->flags & IORESOURCE_DISABLED) {
			pnp_printf(buffer, " disabled\n");
			continue;
		}

		switch (pnp_resource_type(res)) {
		case IORESOURCE_IO:
		case IORESOURCE_MEM:
			pnp_printf(buffer, " %#llx-%#llx\n",
				   (unsigned long long) res->start,
				   (unsigned long long) res->end);
			break;
		case IORESOURCE_IRQ:
		case IORESOURCE_DMA:
			pnp_printf(buffer, " %lld\n",
				   (unsigned long long) res->start);
			break;
		}
	}

	ret = (buffer->curr - buf);
	kfree(buffer);
	return ret;
}

static ssize_t pnp_set_current_resources(struct device *dmdev,
					 struct device_attribute *attr,
					 const char *ubuf, size_t count)
{
	struct pnp_dev *dev = to_pnp_dev(dmdev);
	char *buf = (void *)ubuf;
	int retval = 0;
	resource_size_t start, end;

	if (dev->status & PNP_ATTACHED) {
		retval = -EBUSY;
		dev_info(&dev->dev, "in use; can't configure\n");
		goto done;
	}

	buf = skip_spaces(buf);
	if (!strnicmp(buf, "disable", 7)) {
		retval = pnp_disable_dev(dev);
		goto done;
	}
	if (!strnicmp(buf, "activate", 8)) {
		retval = pnp_activate_dev(dev);
		goto done;
	}
	if (!strnicmp(buf, "fill", 4)) {
		if (dev->active)
			goto done;
		retval = pnp_auto_config_dev(dev);
		goto done;
	}
	if (!strnicmp(buf, "auto", 4)) {
		if (dev->active)
			goto done;
		pnp_init_resources(dev);
		retval = pnp_auto_config_dev(dev);
		goto done;
	}
	if (!strnicmp(buf, "clear", 5)) {
		if (dev->active)
			goto done;
		pnp_init_resources(dev);
		goto done;
	}
	if (!strnicmp(buf, "get", 3)) {
		mutex_lock(&pnp_res_mutex);
		if (pnp_can_read(dev))
			dev->protocol->get(dev);
		mutex_unlock(&pnp_res_mutex);
		goto done;
	}
	if (!strnicmp(buf, "set", 3)) {
		if (dev->active)
			goto done;
		buf += 3;
		pnp_init_resources(dev);
		mutex_lock(&pnp_res_mutex);
		while (1) {
			buf = skip_spaces(buf);
			if (!strnicmp(buf, "io", 2)) {
				buf = skip_spaces(buf + 2);
				start = simple_strtoul(buf, &buf, 0);
				buf = skip_spaces(buf);
				if (*buf == '-') {
					buf = skip_spaces(buf + 1);
					end = simple_strtoul(buf, &buf, 0);
				} else
					end = start;
				pnp_add_io_resource(dev, start, end, 0);
				continue;
			}
			if (!strnicmp(buf, "mem", 3)) {
				buf = skip_spaces(buf + 3);
				start = simple_strtoul(buf, &buf, 0);
				buf = skip_spaces(buf);
				if (*buf == '-') {
					buf = skip_spaces(buf + 1);
					end = simple_strtoul(buf, &buf, 0);
				} else
					end = start;
				pnp_add_mem_resource(dev, start, end, 0);
				continue;
			}
			if (!strnicmp(buf, "irq", 3)) {
				buf = skip_spaces(buf + 3);
				start = simple_strtoul(buf, &buf, 0);
				pnp_add_irq_resource(dev, start, 0);
				continue;
			}
			if (!strnicmp(buf, "dma", 3)) {
				buf = skip_spaces(buf + 3);
				start = simple_strtoul(buf, &buf, 0);
				pnp_add_dma_resource(dev, start, 0);
				continue;
			}
			break;
		}
		mutex_unlock(&pnp_res_mutex);
		goto done;
	}

done:
	if (retval < 0)
		return retval;
	return count;
}

static ssize_t pnp_show_current_ids(struct device *dmdev,
				    struct device_attribute *attr, char *buf)
{
	char *str = buf;
	struct pnp_dev *dev = to_pnp_dev(dmdev);
	struct pnp_id *pos = dev->id;

	while (pos) {
		str += sprintf(str, "%s\n", pos->id);
		pos = pos->next;
	}
	return (str - buf);
}

struct device_attribute pnp_interface_attrs[] = {
	__ATTR(resources, S_IRUGO | S_IWUSR,
		   pnp_show_current_resources,
		   pnp_set_current_resources),
	__ATTR(options, S_IRUGO, pnp_show_options, NULL),
	__ATTR(id, S_IRUGO, pnp_show_current_ids, NULL),
	__ATTR_NULL,
};
Commit	Line	Data
1da177e4 LT	1	/*
	2	* interface.c - contains everything related to the user interface
	3	*
c1017a4c	4	* Some code, especially possible resource dumping is based on isapnp_proc.c (c) Jaroslav Kysela <perex@perex.cz>
1da177e4	5	* Copyright 2002 Adam Belay <ambx1@neo.rr.com>
1f32ca31 BH	6	* Copyright (C) 2008 Hewlett-Packard Development Company, L.P.
1f32ca31 BH	7	* Bjorn Helgaas <bjorn.helgaas@hp.com>
1da177e4 LT	8	*/
	9
	10	#include <linux/pnp.h>
	11	#include <linux/string.h>
	12	#include <linux/errno.h>
	13	#include <linux/list.h>
	14	#include <linux/types.h>
	15	#include <linux/stat.h>
	16	#include <linux/ctype.h>
	17	#include <linux/slab.h>
b3bd86e2 DW	18	#include <linux/mutex.h>
b3bd86e2 DW	19
1da177e4 LT	20	#include <asm/uaccess.h>
	21
	22	#include "base.h"
	23
	24	struct pnp_info_buffer {
	25	char buffer; / pointer to begin of buffer */
	26	char curr; / current position in buffer */
	27	unsigned long size; /* current size */
	28	unsigned long len; /* total length of buffer */
	29	int stop; /* stop flag */
	30	int error; /* error code */
	31	};
	32
	33	typedef struct pnp_info_buffer pnp_info_buffer_t;
	34
9dd78466	35	static int pnp_printf(pnp_info_buffer_t * buffer, char *fmt, ...)
1da177e4 LT	36	{
	37	va_list args;
	38	int res;
	39
	40	if (buffer->stop \|\| buffer->error)
	41	return 0;
	42	va_start(args, fmt);
	43	res = vsnprintf(buffer->curr, buffer->len - buffer->size, fmt, args);
	44	va_end(args);
	45	if (buffer->size + res >= buffer->len) {
	46	buffer->stop = 1;
	47	return 0;
	48	}
	49	buffer->curr += res;
	50	buffer->size += res;
	51	return res;
	52	}
	53
9dd78466 BH	54	static void pnp_print_port(pnp_info_buffer_t * buffer, char *space,
9dd78466 BH	55	struct pnp_port *port)
1da177e4	56	{
169aaffe BH	57	pnp_printf(buffer, "%sport %#llx-%#llx, align %#llx, size %#llx, "
	58	"%i-bit address decoding\n", space,
	59	(unsigned long long) port->min,
	60	(unsigned long long) port->max,
	61	port->align ? ((unsigned long long) port->align - 1) : 0,
	62	(unsigned long long) port->size,
08c9f262	63	port->flags & IORESOURCE_IO_16BIT_ADDR ? 16 : 10);
1da177e4 LT	64	}
1da177e4 LT	65
9dd78466 BH	66	static void pnp_print_irq(pnp_info_buffer_t * buffer, char *space,
9dd78466 BH	67	struct pnp_irq *irq)
1da177e4 LT	68	{
	69	int first = 1, i;
	70
	71	pnp_printf(buffer, "%sirq ", space);
	72	for (i = 0; i < PNP_IRQ_NR; i++)
7aefff51	73	if (test_bit(i, irq->map.bits)) {
1da177e4 LT	74	if (!first) {
	75	pnp_printf(buffer, ",");
	76	} else {
	77	first = 0;
	78	}
	79	if (i == 2 \|\| i == 9)
	80	pnp_printf(buffer, "2/9");
	81	else
	82	pnp_printf(buffer, "%i", i);
	83	}
7aefff51	84	if (bitmap_empty(irq->map.bits, PNP_IRQ_NR))
1da177e4 LT	85	pnp_printf(buffer, "<none>");
	86	if (irq->flags & IORESOURCE_IRQ_HIGHEDGE)
	87	pnp_printf(buffer, " High-Edge");
	88	if (irq->flags & IORESOURCE_IRQ_LOWEDGE)
	89	pnp_printf(buffer, " Low-Edge");
	90	if (irq->flags & IORESOURCE_IRQ_HIGHLEVEL)
	91	pnp_printf(buffer, " High-Level");
	92	if (irq->flags & IORESOURCE_IRQ_LOWLEVEL)
	93	pnp_printf(buffer, " Low-Level");
d5ebde6e BH	94	if (irq->flags & IORESOURCE_IRQ_OPTIONAL)
d5ebde6e BH	95	pnp_printf(buffer, " (optional)");
1da177e4 LT	96	pnp_printf(buffer, "\n");
	97	}
	98
9dd78466 BH	99	static void pnp_print_dma(pnp_info_buffer_t * buffer, char *space,
9dd78466 BH	100	struct pnp_dma *dma)
1da177e4 LT	101	{
	102	int first = 1, i;
	103	char *s;
	104
	105	pnp_printf(buffer, "%sdma ", space);
	106	for (i = 0; i < 8; i++)
9dd78466	107	if (dma->map & (1 << i)) {
1da177e4 LT	108	if (!first) {
	109	pnp_printf(buffer, ",");
	110	} else {
	111	first = 0;
	112	}
	113	pnp_printf(buffer, "%i", i);
	114	}
	115	if (!dma->map)
	116	pnp_printf(buffer, "<none>");
	117	switch (dma->flags & IORESOURCE_DMA_TYPE_MASK) {
	118	case IORESOURCE_DMA_8BIT:
	119	s = "8-bit";
	120	break;
	121	case IORESOURCE_DMA_8AND16BIT:
	122	s = "8-bit&16-bit";
	123	break;
	124	default:
	125	s = "16-bit";
	126	}
	127	pnp_printf(buffer, " %s", s);
	128	if (dma->flags & IORESOURCE_DMA_MASTER)
	129	pnp_printf(buffer, " master");
	130	if (dma->flags & IORESOURCE_DMA_BYTE)
	131	pnp_printf(buffer, " byte-count");
	132	if (dma->flags & IORESOURCE_DMA_WORD)
	133	pnp_printf(buffer, " word-count");
	134	switch (dma->flags & IORESOURCE_DMA_SPEED_MASK) {
	135	case IORESOURCE_DMA_TYPEA:
	136	s = "type-A";
	137	break;
	138	case IORESOURCE_DMA_TYPEB:
	139	s = "type-B";
	140	break;
	141	case IORESOURCE_DMA_TYPEF:
	142	s = "type-F";
	143	break;
	144	default:
	145	s = "compatible";
	146	break;
	147	}
	148	pnp_printf(buffer, " %s\n", s);
	149	}
	150
9dd78466 BH	151	static void pnp_print_mem(pnp_info_buffer_t * buffer, char *space,
9dd78466 BH	152	struct pnp_mem *mem)
1da177e4 LT	153	{
	154	char *s;
	155
169aaffe BH	156	pnp_printf(buffer, "%sMemory %#llx-%#llx, align %#llx, size %#llx",
	157	space, (unsigned long long) mem->min,
	158	(unsigned long long) mem->max,
	159	(unsigned long long) mem->align,
	160	(unsigned long long) mem->size);
1da177e4 LT	161	if (mem->flags & IORESOURCE_MEM_WRITEABLE)
	162	pnp_printf(buffer, ", writeable");
	163	if (mem->flags & IORESOURCE_MEM_CACHEABLE)
	164	pnp_printf(buffer, ", cacheable");
	165	if (mem->flags & IORESOURCE_MEM_RANGELENGTH)
	166	pnp_printf(buffer, ", range-length");
	167	if (mem->flags & IORESOURCE_MEM_SHADOWABLE)
	168	pnp_printf(buffer, ", shadowable");
	169	if (mem->flags & IORESOURCE_MEM_EXPANSIONROM)
	170	pnp_printf(buffer, ", expansion ROM");
	171	switch (mem->flags & IORESOURCE_MEM_TYPE_MASK) {
	172	case IORESOURCE_MEM_8BIT:
	173	s = "8-bit";
	174	break;
	175	case IORESOURCE_MEM_8AND16BIT:
	176	s = "8-bit&16-bit";
	177	break;
	178	case IORESOURCE_MEM_32BIT:
	179	s = "32-bit";
	180	break;
	181	default:
	182	s = "16-bit";
	183	}
	184	pnp_printf(buffer, ", %s\n", s);
	185	}
	186
9dd78466	187	static void pnp_print_option(pnp_info_buffer_t * buffer, char *space,
1f32ca31	188	struct pnp_option *option)
1da177e4	189	{
1f32ca31 BH	190	switch (option->type) {
	191	case IORESOURCE_IO:
	192	pnp_print_port(buffer, space, &option->u.port);
	193	break;
	194	case IORESOURCE_MEM:
	195	pnp_print_mem(buffer, space, &option->u.mem);
	196	break;
	197	case IORESOURCE_IRQ:
	198	pnp_print_irq(buffer, space, &option->u.irq);
	199	break;
	200	case IORESOURCE_DMA:
	201	pnp_print_dma(buffer, space, &option->u.dma);
	202	break;
1da177e4	203	}
1da177e4 LT	204	}
1da177e4 LT	205
9dd78466 BH	206	static ssize_t pnp_show_options(struct device *dmdev,
9dd78466 BH	207	struct device_attribute attr, char buf)
1da177e4 LT	208	{
1da177e4 LT	209	struct pnp_dev *dev = to_pnp_dev(dmdev);
b72ee1f1	210	pnp_info_buffer_t *buffer;
1f32ca31 BH	211	struct pnp_option *option;
	212	int ret, dep = 0, set = 0;
	213	char *indent;
1da177e4	214
b72ee1f1	215	buffer = pnp_alloc(sizeof(pnp_info_buffer_t));
1da177e4 LT	216	if (!buffer)
	217	return -ENOMEM;
	218
	219	buffer->len = PAGE_SIZE;
	220	buffer->buffer = buf;
	221	buffer->curr = buffer->buffer;
1da177e4	222
1f32ca31 BH	223	list_for_each_entry(option, &dev->options, list) {
	224	if (pnp_option_is_dependent(option)) {
	225	indent = " ";
	226	if (!dep \|\| pnp_option_set(option) != set) {
	227	set = pnp_option_set(option);
	228	dep = 1;
	229	pnp_printf(buffer, "Dependent: %02i - "
	230	"Priority %s\n", set,
	231	pnp_option_priority_name(option));
	232	}
	233	} else {
	234	dep = 0;
	235	indent = "";
	236	}
	237	pnp_print_option(buffer, indent, option);
1da177e4	238	}
1f32ca31	239
1da177e4 LT	240	ret = (buffer->curr - buf);
	241	kfree(buffer);
	242	return ret;
	243	}
	244
9dd78466 BH	245	static ssize_t pnp_show_current_resources(struct device *dmdev,
	246	struct device_attribute *attr,
	247	char *buf)
1da177e4 LT	248	{
1da177e4 LT	249	struct pnp_dev *dev = to_pnp_dev(dmdev);
b72ee1f1	250	pnp_info_buffer_t *buffer;
f61ed7e3	251	struct pnp_resource *pnp_res;
95ab3669	252	struct resource *res;
f61ed7e3	253	int ret;
1da177e4 LT	254
	255	if (!dev)
	256	return -EINVAL;
	257
b72ee1f1	258	buffer = pnp_alloc(sizeof(pnp_info_buffer_t));
1da177e4 LT	259	if (!buffer)
1da177e4 LT	260	return -ENOMEM;
b72ee1f1	261
1da177e4 LT	262	buffer->len = PAGE_SIZE;
	263	buffer->buffer = buf;
	264	buffer->curr = buffer->buffer;
	265
f61ed7e3	266	pnp_printf(buffer, "state = %s\n", dev->active ? "active" : "disabled");
1da177e4	267
f61ed7e3 BH	268	list_for_each_entry(pnp_res, &dev->resources, list) {
	269	res = &pnp_res->res;
	270
	271	pnp_printf(buffer, pnp_resource_type_name(res));
	272
	273	if (res->flags & IORESOURCE_DISABLED) {
aee3ad81	274	pnp_printf(buffer, " disabled\n");
f61ed7e3 BH	275	continue;
	276	}
	277
	278	switch (pnp_resource_type(res)) {
	279	case IORESOURCE_IO:
	280	case IORESOURCE_MEM:
	281	pnp_printf(buffer, " %#llx-%#llx\n",
aee3ad81 BH	282	(unsigned long long) res->start,
aee3ad81 BH	283	(unsigned long long) res->end);
f61ed7e3 BH	284	break;
	285	case IORESOURCE_IRQ:
	286	case IORESOURCE_DMA:
aee3ad81 BH	287	pnp_printf(buffer, " %lld\n",
aee3ad81 BH	288	(unsigned long long) res->start);
f61ed7e3 BH	289	break;
f61ed7e3 BH	290	}
1da177e4	291	}
f61ed7e3	292
1da177e4 LT	293	ret = (buffer->curr - buf);
	294	kfree(buffer);
	295	return ret;
	296	}
	297
b72ee1f1 BH	298	static ssize_t pnp_set_current_resources(struct device *dmdev,
	299	struct device_attribute *attr,
	300	const char *ubuf, size_t count)
1da177e4 LT	301	{
1da177e4 LT	302	struct pnp_dev *dev = to_pnp_dev(dmdev);
9dd78466 BH	303	char buf = (void )ubuf;
9dd78466 BH	304	int retval = 0;
cc8c2e30	305	resource_size_t start, end;
1da177e4 LT	306
	307	if (dev->status & PNP_ATTACHED) {
	308	retval = -EBUSY;
a05d0781	309	dev_info(&dev->dev, "in use; can't configure\n");
1da177e4 LT	310	goto done;
	311	}
	312
e7d2860b	313	buf = skip_spaces(buf);
9dd78466	314	if (!strnicmp(buf, "disable", 7)) {
1da177e4 LT	315	retval = pnp_disable_dev(dev);
	316	goto done;
	317	}
9dd78466	318	if (!strnicmp(buf, "activate", 8)) {
1da177e4 LT	319	retval = pnp_activate_dev(dev);
	320	goto done;
	321	}
9dd78466	322	if (!strnicmp(buf, "fill", 4)) {
1da177e4 LT	323	if (dev->active)
	324	goto done;
	325	retval = pnp_auto_config_dev(dev);
	326	goto done;
	327	}
9dd78466	328	if (!strnicmp(buf, "auto", 4)) {
1da177e4 LT	329	if (dev->active)
1da177e4 LT	330	goto done;
f4490002	331	pnp_init_resources(dev);
1da177e4 LT	332	retval = pnp_auto_config_dev(dev);
	333	goto done;
	334	}
9dd78466	335	if (!strnicmp(buf, "clear", 5)) {
1da177e4 LT	336	if (dev->active)
1da177e4 LT	337	goto done;
f4490002	338	pnp_init_resources(dev);
1da177e4 LT	339	goto done;
1da177e4 LT	340	}
9dd78466	341	if (!strnicmp(buf, "get", 3)) {
b3bd86e2	342	mutex_lock(&pnp_res_mutex);
1da177e4	343	if (pnp_can_read(dev))
59284cb4	344	dev->protocol->get(dev);
b3bd86e2	345	mutex_unlock(&pnp_res_mutex);
1da177e4 LT	346	goto done;
1da177e4 LT	347	}
9dd78466	348	if (!strnicmp(buf, "set", 3)) {
1da177e4 LT	349	if (dev->active)
	350	goto done;
	351	buf += 3;
f4490002	352	pnp_init_resources(dev);
b3bd86e2	353	mutex_lock(&pnp_res_mutex);
1da177e4	354	while (1) {
e7d2860b	355	buf = skip_spaces(buf);
9dd78466	356	if (!strnicmp(buf, "io", 2)) {
e7d2860b	357	buf = skip_spaces(buf + 2);
cc8c2e30	358	start = simple_strtoul(buf, &buf, 0);
e7d2860b	359	buf = skip_spaces(buf);
9dd78466	360	if (*buf == '-') {
e7d2860b	361	buf = skip_spaces(buf + 1);
cc8c2e30	362	end = simple_strtoul(buf, &buf, 0);
1da177e4	363	} else
cc8c2e30	364	end = start;
87e4acf3	365	pnp_add_io_resource(dev, start, end, 0);
1da177e4 LT	366	continue;
1da177e4 LT	367	}
9dd78466	368	if (!strnicmp(buf, "mem", 3)) {
e7d2860b	369	buf = skip_spaces(buf + 3);
d6180f36	370	start = simple_strtoul(buf, &buf, 0);
e7d2860b	371	buf = skip_spaces(buf);
9dd78466	372	if (*buf == '-') {
e7d2860b	373	buf = skip_spaces(buf + 1);
d6180f36	374	end = simple_strtoul(buf, &buf, 0);
1da177e4	375	} else
d6180f36	376	end = start;
87e4acf3	377	pnp_add_mem_resource(dev, start, end, 0);
1da177e4 LT	378	continue;
1da177e4 LT	379	}
9dd78466	380	if (!strnicmp(buf, "irq", 3)) {
e7d2860b	381	buf = skip_spaces(buf + 3);
dbddd038	382	start = simple_strtoul(buf, &buf, 0);
87e4acf3	383	pnp_add_irq_resource(dev, start, 0);
1da177e4 LT	384	continue;
1da177e4 LT	385	}
9dd78466	386	if (!strnicmp(buf, "dma", 3)) {
e7d2860b	387	buf = skip_spaces(buf + 3);
dc16f5f2	388	start = simple_strtoul(buf, &buf, 0);
87e4acf3	389	pnp_add_dma_resource(dev, start, 0);
1da177e4 LT	390	continue;
	391	}
	392	break;
	393	}
b3bd86e2	394	mutex_unlock(&pnp_res_mutex);
1da177e4 LT	395	goto done;
1da177e4 LT	396	}
1e0aa9ad BH	397
1e0aa9ad BH	398	done:
1da177e4 LT	399	if (retval < 0)
	400	return retval;
	401	return count;
	402	}
	403
9dd78466 BH	404	static ssize_t pnp_show_current_ids(struct device *dmdev,
9dd78466 BH	405	struct device_attribute attr, char buf)
1da177e4 LT	406	{
	407	char *str = buf;
	408	struct pnp_dev *dev = to_pnp_dev(dmdev);
9dd78466	409	struct pnp_id *pos = dev->id;
1da177e4 LT	410
1da177e4 LT	411	while (pos) {
9dd78466	412	str += sprintf(str, "%s\n", pos->id);
1da177e4 LT	413	pos = pos->next;
	414	}
	415	return (str - buf);
	416	}
	417
8a89efd1 DM	418	struct device_attribute pnp_interface_attrs[] = {
	419	__ATTR(resources, S_IRUGO \| S_IWUSR,
	420	pnp_show_current_resources,
	421	pnp_set_current_resources),
	422	__ATTR(options, S_IRUGO, pnp_show_options, NULL),
	423	__ATTR(id, S_IRUGO, pnp_show_current_ids, NULL),
	424	__ATTR_NULL,
	425	};